Reader Response: Substantial Within-Country Variation in the Incidence of Subarachnoid Hemorrhage: A Nationwide Finnish Study

Abstract

In a recent article published in Neurology, Rautalin et al.1 report substantial regional differences and a decreasing trend in the incidence of aneurysmal subarachnoid hemorrhage (aSAH) in all regions of Finland. However, in Tampere University Hospital, one of the referral centers for the population in this article, we do not see the decreasing trend in the number of admitted aSAH cases, but rather a constant variation from 1990 to 2014.2